1 From 9a061cea4477f26a1dfcc0a08dc20575016e91df Mon Sep 17 00:00:00 2001
2 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
3 Date: Thu, 24 Mar 2016 14:24:20 +0100
4 Subject: [PATCH 1/3] serial: imx: fix polarity of RI
6 Content-Type: text/plain; charset=UTF-8
7 Content-Transfer-Encoding: 8bit
9 When in DTE mode, the bit USR2_RIIN is active low. So invert the logic
12 Fixes: 90ebc4838666 ("serial: imx: repair and complete handshaking")
13 Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
14 Signed-off-by: Petr Štetiar <ynezz@true.cz>
16 drivers/tty/serial/imx.c | 6 +++---
17 1 file changed, 3 insertions(+), 3 deletions(-)
19 --- a/drivers/tty/serial/imx.c
20 +++ b/drivers/tty/serial/imx.c
21 @@ -817,9 +817,9 @@ static unsigned int imx_get_mctrl(struct
22 if (!(usr1 & USR2_DCDIN))
25 - /* in DCE mode RIIN is always 0 */
26 - if (readl(sport->port.membase + USR2) & USR2_RIIN)
28 + if (sport->dte_mode)
29 + if (!(readl(sport->port.membase + USR2) & USR2_RIIN))